feat: Electron desktop app, native ffmpeg export, fully static web

- apps/desktop: Electron shell serving the static web build over a
  privileged opencut:// protocol; exports stream frames over IPC to a
  bundled ffmpeg (libx264/libvpx-vp9, BT.709 tagged) with backpressure.
  electron-builder packaging: AppImage, deb, rpm.
- apps/web: dead backend deleted (better-auth, drizzle/pg, upstash,
  botid, freesound proxy, blog, rss, env validation); next build emits
  a zero-env static export; /editor/[project_id] -> /editor?project=.
- Native exporter mirrors SceneExporter; activates when the preload
  bridge is present; web keeps the mediabunny path.
- Docker self-hosting now builds and serves the static export via nginx.
- Release workflow: v* tags publish static web tarball + Linux packages.
- Changelog 0.4.0; README/AGENTS/CONTRIBUTING/roadmap updated.
- GPUI/Rust rewrite parked on branch rust-rewrite.

1 files changed, 0 insertions, 110 deletions

diff --git a/apps/desktop/script/setup b/apps/desktop/script/setup
deleted file mode 100644
index 3152a080..00000000
--- a/apps/desktop/script/setup
+++ /dev/null
@@ -1,110 +0,0 @@
-#!/usr/bin/env bash
-
-# Installs the native system libraries GPUI needs to compile on Linux/macOS.
-# Run script/setup-rust first if you don't have Rust installed yet.
-
-set -euo pipefail
-
-if [ "$(id -u)" -eq 0 ]; then
-  maysudo=''
-else
-  maysudo="$(command -v sudo || command -v doas || true)"
-fi
-
-# Ubuntu, Debian, Mint, Pop!_OS, Kali, Raspbian, etc.
-apt=$(command -v apt-get || true)
-if [[ -n $apt ]]; then
-  deps=(
-    curl
-    build-essential
-    pkg-config
-    gcc
-    g++
-    make
-    libasound2-dev
-    libfontconfig-dev
-    libglib2.0-dev
-    libssl-dev
-    libva-dev
-    libvulkan1
-    libwayland-dev
-    libx11-xcb-dev
-    libxkbcommon-x11-dev
-    libzstd-dev
-    libsqlite3-dev
-  )
-
-  $maysudo "$apt" update
-  $maysudo "$apt" install -y "${deps[@]}"
-  echo "Desktop native dependencies installed."
-  exit 0
-fi
-
-# Fedora, RHEL, CentOS, Alma, etc.
-dnf=$(command -v dnf || true)
-if [[ -n $dnf ]]; then
-  deps=(
-    gcc
-    gcc-c++
-    make
-    pkg-config
-    alsa-lib-devel
-    fontconfig-devel
-    glib2-devel
-    openssl-devel
-    libva-devel
-    vulkan-loader
-    wayland-devel
-    libxcb-devel
-    libxkbcommon-x11-devel
-    libzstd-devel
-    sqlite-devel
-    curl
-  )
-
-  $maysudo "$dnf" install -y "${deps[@]}"
-  echo "Desktop native dependencies installed."
-  exit 0
-fi
-
-# Arch, Manjaro, etc.
-pacman=$(command -v pacman || true)
-if [[ -n $pacman ]]; then
-  deps=(
-    gcc
-    make
-    pkgconf
-    alsa-lib
-    fontconfig
-    glib2
-    openssl
-    libva
-    vulkan-loader
-    wayland
-    libxcb
-    libxkbcommon-x11
-    zstd
-    sqlite
-    curl
-  )
-
-  $maysudo "$pacman" -Syu --needed --noconfirm "${deps[@]}"
-  echo "Desktop native dependencies installed."
-  exit 0
-fi
-
-# macOS
-if [[ "$(uname)" == "Darwin" ]]; then
-  if ! xcode-select -p &> /dev/null; then
-    echo "Installing Xcode Command Line Tools..."
-    xcode-select --install
-    echo "Re-run this script after the Xcode install completes."
-    exit 0
-  fi
-
-  echo "Desktop native dependencies installed."
-  exit 0
-fi
-
-echo "Unsupported platform. See apps/desktop/README.md for manual setup instructions."
-exit 1